ETC Request ID: STIS.sp.1368376
Requested Signal/Noise Ratio = 10.000 at wavelength 1218.00 Å (per resolution element)
gives: Time = 116,018,997.3955 seconds
Table of Source and Noise Counts per Pixel
| Detailed Information | Count rate | Total counts | Associated noise |
| (counts/s) | (counts) | (counts) | |
| Counts (box 7 pixels high) | (1 pix x 7 pix) | (2 pix resel x 7 pix) | |
| Source | 2.149e-05 | 4,986.24 | 70.61 |
| Background | 0.001 | 243,639.89 | 493.60 |
| Sky | 1.435e-12 | 3.33e-04 | 0.02 |
| Dark Current | 0.001 | 243,639.89 | 493.60 |
| Total in selected region | 0.001 | 248,626.14 | 498.62 |
| Brightest Pixel (single exposure) (at 1215.65 Å) | 0.011 | 1,277,366.60 | |
| Count rate entire detector | 233.236 | ||
| Buffer Time (sec) | 8,574.99 | ||
| For APT purposes, the recommended buffer time should be 4/5 of the buffer time calculated above. Please refer to the STIS Instrument Handbook for more details. | |||
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| Global Count Rates | |||
| Source only | 0.087 | 10,107,438.962 | |
| Background (sky+dark) | 233.149 | 27,049,744,751.76 | |
| Encircled energy fraction | 0.76 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1218 |
| Grating: | [G140M] R ~ 10000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: ETC_2M1237_15870-Burgasser02-Liebert07-Saur-min.txt |
| Extinction E(B-V): | None |
| Normalization: | None |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 27.2
